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Thao
Questions and answers by visitors named
Thao
Questions (26)
A 500 mL metal cylinder holding 0.100 moles of helium gas is known to rupture at a pressure of 10 atmospheres. At what
7 answers
6,761 views
Which colony was the first to promote religious tolerance
3 answers
543 views
Why did more enslaved Africa live in South Carolina than did white settlers?
10 answers
628 views
How might the colony of Georgia have been different if Oglethorpe's plan had succeeded?
4 answers
1,034 views
Why were slaves in high demand in the southern colonies?
3 answers
1,097 views
Which colony was the first to promote religious tolerance?
19 answers
988 views
Calculate the density of bromine if 586g of the substance occupies 188mL
4 answers
1,014 views
A little aluminum boat (mass of 14.50g) has a volume of 450.00cm3. The boat is placed in a small pool of water and carefully
7 answers
3,970 views
Write an equation of the line containing the point (o,-4) and perpendicular to the line y=1/3x+5
1 answer
328 views
At what tempertures is your element a solid, liquid, or gas? Why or how?
1 answer
338 views
At what tempertures is calcium a solid, liquid, or gas?
1 answer
386 views
A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is
2 answers
559 views
How many joules of heat are needed to heat 25.0 g of ice at -5.0 degrees celcius to a final temperature of 40.0 degrees celcius?
3 answers
1,799 views
If 12.0 gram of ice are dropped in 150. ml of water at 45 degrees celcius, what is the final temperature of the water?
6 answers
685 views
How many grams of ice are needed to cool 250 ml of water from 75 degrees celcius to 5 degrees celcius?
3 answers
1,502 views
Ideal gas law question
A 4.0 liter container has two gases inside, neon and argon. It is known that at 18 °C, the total pressure
4 answers
5,250 views
If a certain gas has a density of 2.34 g/L at 27.0C and 742 torr, what is the molar mass of this gas?
I am not sure what formula
1 answer
583 views
If the molar volume of an ideal gas is 22.4 L/mol, calculate the theoretical density of hydrogen gas at STP.
Not sure what
1 answer
469 views
If 12.50 mL of 0.324 M HCl is diluted to 250.00 mL, what is the concentration of HCl in the final solution?
3 answers
1,289 views
You need 123 mL of 0.245 M NaOH solution for a certain experiment, and the only solution available in the lab is 1.252 M. How
2 answers
544 views
Write a balance ionic and net equation for the following:
KOH + HC2H3O2 I came up with the following but think this is wrong: KOH
2 answers
768 views
Using the molarity of fromic acid (HCOOH): 0.1033
Calculate the percent by mass of fromic acid in unknown solution. Assume the
1 answer
482 views
The value of delta H for the reaction below is -1107kj.
2Ba (s) + O2 (g) -> 2BaO (s) How many kJ of heat are released when 5.75 g
5 answers
10,331 views
A 25.00 mL sample of seawater taken from a depth of 1000 meters weighs 25.75 g. What is the density of seawater?
1 answer
426 views
A gas is confined in a 0.47-m-diameter cylinder by a piston, on which rests a weight. The mass of the piston and weight together
1 answer
922 views
100 ml graduated cylinder containing 50 ml of water, drop 100g piece of brass into the water what height does the water rise in
2 answers
632 views
Answers (15)
A. $6,853
I came up with this but not sure if it's right: D = 1mol/22.4L x 2.02g/1mol = 0.0902g/L
I recalculated the problem and got it correct. Thank you.
I was giving the answer key with the correct answer at 336 C. Now i'm really confused... Can someone explain.
Makes perfect sense. Thank you.
After some sleep, i was able to come up with the following. It's still not 36 degrees, but close. Can some check my calculation? [mass ice x heat fusion] + [mass melted ice x specific heat water x (Tfinal-Tinitial)] + [mass water x specific heat water x
Filling in the equation, here is what I have. Still not coming up with 36 degrees. Please help: [mass ice x heat fusion] 12.0g x 334j/g [mass melted ice x specific heat water x (Tfinal-Tinitial)] 12.0g x 4.18j/g x 45 (Delta T is 45 because temp of ice from
n=174.2 right? How can you do that?
so how about another questions? Can you help me?
Section 1: The Southern Colonies
yes
Analyze Why did more enslaved Africa live in South Carolina than did white settlers?
i did but i don't understand that question
so Ms.Sue is that your answer for this question?
1,2,3,4
